WAEC Biology Past Questions & Answers - Page 18

86.

Which of the following blood components has the greatest affinity for oxygen and carbon (IV) oxide? 

A.

Lymphocyte

B.

Thrombocyte

C.

Erythrocyte

D.

Blood plasma

Correct answer is B

No explanation has been provided for this answer.

87.

The total number of caudal vertebrae in animals X and Y is 4 and 27 respectively. The animals are likely to be

A.

fish and human

B.

toad and rat

C.

toad and fish

D.

humans and rat

Correct answer is D

No explanation has been provided for this answer.

88.

The region of a plant stem in which cells divide to increase its diameter is

A.

cambium

B.

phloem

C.

xylem

D.

collenchyma

Correct answer is A

No explanation has been provided for this answer.

89.

The process that brings about the shrinking of a spirogyra cell when placed in a strong solution is ?

A.

osmosis

B.

autolysis

C.

plasmolysis

D.

diffusion

Correct answer is C

No explanation has been provided for this answer.

90.

The organelles in cells which are also referred to as suicidal bags are the 

A.

mitochondria

B.

lysosomes

C.

ribosomes

D.

nuclei

Correct answer is B

No explanation has been provided for this answer.